as sharp as a razor

adv.

厉害，机警；

First trans-axillary implantation of Edwards Sapien valve to treat an incompetent aortic bioprosthesis
The bioabsorbable stent as a virtual prosthesis.
MRL-SPL Team Description for RoboCup 2015
Precipitant-free crystallization of protein molecules induced by incision on substrate
Two Cryogenian glacial successions compared: Aspects of the Sturt and Elatina sediment records of South Australia
China's Revolution in Military Affairs: An Uphill Endeavour
The Rapidly Flaring Afterglow of the Very Bright and Energetic GRB 070125
Diurnal periodicity of weak eathquakes and high-frequency undergraund noise in Kamchatka
Jig assembly
Joint insert and method/system for using same